Granted Patent
Utility
US 4,842,013 · App. 07/161,860
Droop compensated direct acting pressure regulator
Inventors:
Donald D. Rice, Mark E. Hood
Patented Case
View Patent ↗
Granted: Jun 27, 1989
Filed: Feb 29, 1988
Inventors
Donald D. Rice
Mark E. Hood
Assignee (at issue)
Fisher Controls International LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.